package com.rui.unsafe;

import java.util.*;
import java.util.concurrent.CopyOnWriteArrayList;

public class ListTest {
    public static void main(String[] args) {
//        List<String> list = Arrays.asList("1", "2", "3");
//        list.forEach(System.out::println);

//        List<String> list = new Vector<>();

//        List<String> list = Collections.synchronizedList(new ArrayList<>());

        List<String> list = new CopyOnWriteArrayList<>();
        for (int i = 0; i < 100; i++) {
            new Thread(() -> {
                list.add(UUID.randomUUID().toString().substring(0,5));
                System.out.println(list);
            },String.valueOf(i)).start();
        }
    }
}
